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0.010-0.014"
5 to 14 thousandths
0.010-0.014" is the Briggs spec
.010 to .012"
The thickness of a business card!
For most small 4 cycle cylinder engines using a magneto and a coil to provide electricity to feed the spark the gap is .006 to .010.
Most mowers don't have a coil, they use magnetos for ignition. If it does have on it steps up voltage to a high level to jump the spark plug gap.
you can go to any parts store and buy a feeler gauge for a couple of dollars. use that to set the air gap between the coil and the flywheel. use the oem specs
The gap should be between .006 and .010 if it has aluminum clylinders. The gap should be between .010 and .014 if it has cast iron cylinders.
The car has electornic ignition. There are no points. The timing is a coil packand set for life.
Depending on the year model, ( points or CD ignition ), check the following: Points, gap and condition Coil and lead Condensor Spark plugs, gap and condition ( worn, fouled ) Sensor coil powerpack On points ignition, usually closed or dirty contacts. On CD ignition, usually the powerpack. Also, check that all grounds are clean and tight.
sounds like a ignition breaking down from heat, scan codes good change ther is a cylinder misfire code. if plugs are old and have excessive gap this causes coils to work harder to jump a big gap the bigger the gap the coil has to produce more voltage a heat causing overload on coil